Originally Posted by
maddog34
more likely a 10mm rear axle... and the rear frame between the dropouts should probably be 142mm, not 145mm... standard MTB is 135mm, 142mm, and a few 150's for DH bikes...... and most 142 and 150 hubs use a 12mm axle...
check the inner diameter of the dropouts.... someone might have swapped out the correct wheel for a lesser unit, etc...
If the OP is measuring the thru-axle proper...it is easily possible it measures 145mm in overall length. While rear and front spacings on the frame are standard....the thru-axle length itself is anything but standard.
All About Thru Axles - Fairwheel Bikes Blog
And that is not an inclusive list.